1/* Copyright (c) 2013-2016 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#ifndef DS_H
  7#define DS_H
  8
  9#include <mgba-util/common.h>
 10
 11CXX_GUARD_START
 12
 13#include <mgba/core/log.h>
 14#include <mgba/core/timing.h>
 15#include <mgba-util/circle-buffer.h>
 16
 17#include <mgba/internal/ds/memory.h>
 18#include <mgba/internal/ds/timer.h>
 19#include <mgba/internal/ds/video.h>
 20
 21extern const uint32_t DS_ARM946ES_FREQUENCY;
 22extern const uint32_t DS_ARM7TDMI_FREQUENCY;
 23
 24enum DSIRQ {
 25	DS_IRQ_VBLANK = 0x0,
 26	DS_IRQ_HBLANK = 0x1,
 27	DS_IRQ_VCOUNTER = 0x2,
 28	DS_IRQ_TIMER0 = 0x3,
 29	DS_IRQ_TIMER1 = 0x4,
 30	DS_IRQ_TIMER2 = 0x5,
 31	DS_IRQ_TIMER3 = 0x6,
 32	DS_IRQ_SIO = 0x7,
 33	DS_IRQ_DMA0 = 0x8,
 34	DS_IRQ_DMA1 = 0x9,
 35	DS_IRQ_DMA2 = 0xA,
 36	DS_IRQ_DMA3 = 0xB,
 37	DS_IRQ_KEYPAD = 0xC,
 38	DS_IRQ_SLOT2 = 0xD,
 39	DS_IRQ_IPC_SYNC = 0x10,
 40	DS_IRQ_IPC_EMPTY = 0x11,
 41	DS_IRQ_IPC_NOT_EMPTY = 0x12,
 42	DS_IRQ_SLOT1_TRANS = 0x13,
 43	DS_IRQ_SLOT1 = 0x14,
 44	DS_IRQ_GEOM_FIFO = 0x15,
 45	DS_IRQ_LID = 0x16,
 46	DS_IRQ_SPI = 0x17,
 47	DS_IRQ_WIFI = 0x18,
 48};
 49
 50struct ARMCore;
 51struct DS;
 52struct Patch;
 53struct VFile;
 54struct mDebugger;
 55
 56mLOG_DECLARE_CATEGORY(DS);
 57
 58struct DSCommon {
 59	struct DS* p;
 60
 61	struct ARMCore* cpu;
 62	struct GBATimer timers[4];
 63	struct mTiming timing;
 64	int springIRQ;
 65
 66	struct DSCoreMemory memory;
 67	struct DSCommon* ipc;
 68
 69	struct CircleBuffer fifo;
 70};
 71
 72struct DS {
 73	struct mCPUComponent d;
 74
 75	struct DSCommon ds7;
 76	struct DSCommon ds9;
 77	struct DSMemory memory;
 78	struct DSVideo video;
 79
 80	struct mCoreSync* sync;
 81	struct mTimingEvent slice;
 82	struct ARMCore* activeCpu;
 83	uint32_t sliceStart;
 84	int32_t cycleDrift;
 85
 86	struct ARMDebugger* debugger;
 87
 88	bool cpuBlocked;
 89	bool earlyExit;
 90
 91	uint32_t bios7Checksum;
 92	uint32_t bios9Checksum;
 93	int* keySource;
 94	struct mRTCSource* rtcSource;
 95	struct mRumble* rumble;
 96
 97	struct VFile* romVf;
 98	struct VFile* bios7Vf;
 99	struct VFile* bios9Vf;
100
101	struct mKeyCallback* keyCallback;
102};
103
104struct DSCartridge {
105	char title[12];
106	uint32_t id;
107
108	uint16_t maker;
109	uint8_t type;
110	uint8_t encryptionSeed;
111	uint8_t size;
112	uint8_t reserved[8];
113	uint8_t region;
114	uint8_t version;
115	uint8_t autostart;
116	uint32_t arm9Offset;
117	uint32_t arm9Entry;
118	uint32_t arm9Base;
119	uint32_t arm9Size;
120	uint32_t arm7Offset;
121	uint32_t arm7Entry;
122	uint32_t arm7Base;
123	uint32_t arm7Size;
124	uint32_t fntOffset;
125	uint32_t fntSize;
126	uint32_t fatOffset;
127	uint32_t fatSize;
128	uint32_t arm9FileOverlayOffset;
129	uint32_t arm9FileOverlaySize;
130	uint32_t arm7FileOverlayOffset;
131	uint32_t arm7FileOverlaySize;
132	uint32_t busTiming;
133	uint32_t busKEY1Timing;
134	uint32_t iconOffset;
135	uint16_t secureAreaCrc16;
136	uint16_t secureAreaDelay;
137	// TODO: Fill in more
138	// And ROM data...
139};
140
141void DSCreate(struct DS* ds);
142void DSDestroy(struct DS* ds);
143
144void DSRunLoop(struct DS* ds);
145void DS7Step(struct DS* ds);
146void DS9Step(struct DS* ds);
147
148void DSAttachDebugger(struct DS* ds, struct mDebugger* debugger);
149void DSDetachDebugger(struct DS* ds);
150
151bool DSLoadROM(struct DS* ds, struct VFile* vf);
152void DSUnloadROM(struct DS* ds);
153void DSApplyPatch(struct DS* ds, struct Patch* patch);
154
155bool DSLoadBIOS(struct DS* ds, struct VFile* vf);
156
157bool DSIsROM(struct VFile* vf);
158void DSGetGameCode(struct DS* ds, char* out);
159void DSGetGameTitle(struct DS* ds, char* out);
160
161void DSWriteIME(struct ARMCore* cpu, uint16_t* io, uint16_t value);
162void DSWriteIE(struct ARMCore* cpu, uint16_t* io, uint32_t value);
163void DSRaiseIRQ(struct ARMCore* cpu, uint16_t* io, enum DSIRQ irq);
164
165CXX_GUARD_END
166
167#endif